Increase buffer size used for DNS responses. Bug 2329

[exim.git] / src / src / structs.h

diff --git a/src/src/structs.h b/src/src/structs.h
index 6adb300234ea8ba2a6e5dc0422dbb1e366ef1a61..48f475a8928d549252b733d097885025a39445ca 100644 (file)
--- a/src/src/structs.h
+++ b/src/src/structs.h
@@ -2,7 +2,7 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2017 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 
@@ -65,6 +65,10 @@ typedef enum {       CHUNKING_NOT_OFFERED = -1,
                CHUNKING_ACTIVE,
                CHUNKING_LAST} chunking_state_t;
 
+typedef enum { TFO_NOT_USED = 0,
+               TFO_ATTEMPTED,
+               TFO_USED } tfo_state_t;
+
 /* Structure for holding information about a host for use mainly by routers,
 but also used when checking lists of hosts and when transporting. Looking up
 host addresses is done using this structure. */
@@ -420,8 +424,7 @@ typedef struct auth_info {
     uschar *);                    /* rest of AUTH command */
   int (*clientcode)(              /* client function */
     struct auth_instance *,
-    struct smtp_inblock *,        /* socket and input buffer */
-    struct smtp_outblock *,       /* socket and output buffer */
+    void *,                      /* smtp conn, with socket, output and input buffers */
     int,                          /* command timeout */
     uschar *,                     /* buffer for reading response */
     int);                         /* sizeof buffer */
@@ -614,13 +617,14 @@ typedef struct address_item {
     BOOL af_pass_message:1;            /* pass message in bounces */
     BOOL af_bad_reply:1;               /* filter could not generate autoreply */
     BOOL af_tcp_fastopen_conn:1;       /* delivery connection used TCP Fast Open */
-    BOOL af_tcp_fastopen:1;            /* delivery usefuly used TCP Fast Open */
+    BOOL af_tcp_fastopen:1;            /* delivery usefully used TCP Fast Open */
+    BOOL af_pipelining:1;              /* delivery used (traditional) pipelining */
 #ifndef DISABLE_PRDR
     BOOL af_prdr_used:1;               /* delivery used SMTP PRDR */
 #endif
     BOOL af_chunking_used:1;           /* delivery used SMTP CHUNKING */
     BOOL af_force_command:1;           /* force_command in pipe transport */
-#ifdef EXPERIMENTAL_DANE
+#ifdef SUPPORT_DANE
     BOOL af_dane_verified:1;           /* TLS cert verify done with DANE */
 #endif
 #ifdef SUPPORT_I18N
@@ -739,11 +743,12 @@ typedef struct {
   const uschar *data;                   /* pointer to data */
 } dns_record;
 
-/* Structure for holding the result of a DNS query. */
+/* Structure for holding the result of a DNS query.  A touch over
+64k big, so take care to release as soon as possible. */
 
 typedef struct {
   int     answerlen;              /* length of the answer */
-  uschar  answer[MAXPACKET];      /* the answer itself */
+  uschar  answer[NS_MAXMSG];      /* the answer itself */
 } dns_answer;
 
 /* Structure for holding the intermediate data while scanning a DNS answer
@@ -780,15 +785,21 @@ md5;
 typedef struct sha1 {
   unsigned int H[5];
   unsigned int length;
-  }
-sha1;
+} sha1;
+
+/* A client-initiated connection. If TLS, the second element is non-NULL */
+typedef struct {
+  int  sock;
+  void * tls_ctx;
+} client_conn_ctx;
+
 
 /* Structure used to hold incoming packets of SMTP responses for a specific
 socket. The packets which may contain multiple lines (and in some cases,
 multiple responses). */
 
 typedef struct smtp_inblock {
-  int     sock;                   /* the socket */
+  client_conn_ctx * cctx;        /* the connection */
   int     buffersize;             /* the size of the buffer */
   uschar *ptr;                    /* current position in the buffer */
   uschar *ptrend;                 /* end of data in the buffer */
@@ -800,7 +811,7 @@ specific socket. The packets which may contain multiple lines when pipelining
 is in use. */
 
 typedef struct smtp_outblock {
-  int     sock;                   /* the socket */
+  client_conn_ctx * cctx;        /* the connection */
   int     cmd_count;              /* count of buffered commands */
   int     buffersize;             /* the size of the buffer */
   BOOL    authenticating;         /* TRUE when authenticating */
@@ -878,7 +889,12 @@ struct ob_dkim {
   uschar *dkim_sign_headers;
   uschar *dkim_strict;
   uschar *dkim_hash;
+  uschar *dkim_timestamps;
   BOOL    dot_stuffed;
+  BOOL    force_bodyhash;
+#ifdef EXPERIMENTAL_ARC
+  uschar *arc_signspec;
+#endif
 };
 
 /* End of structs.h */